More than half the British public believe the decision to invade Iraq was wrong and more than a fifth believe Tony Blair should be tried as a war criminal, according to a poll conducted to mark the 10th anniversary of the conflict.

　　A majority (56%) of the public believe the war has increased the risk of a terrorist attack on Britain. More than half, (53%), of those questioned think the invasion was wrong, while just over a quarter (27%) think it was right, according to the YouGov survey.

　　The poll registered a marked gender differences, with almost a third (32%) of men approving the invasion compared with less than a quarter (23%) of women.

　　Half of those questioned said they believed Blair deliberately set out to mislead the British public about the threat posed by weapons of mass destruction (WMD). Less than a third (31%) say he genuinely believed Saddam Hussein possessed a stockpile of WMD.

　　More than a fifth (22%) believe Blair knowingly misled parliament and the public and should be tried as a war criminal over the conflict, according to the poll. The figure compares with almost three in 10 (29%) who say he was right to warn of dangers of the Hussein regime, 18% who think he misled people but we should move on and 15% who believe he did not intend to give false information about the threat.

　　The poll records that a decade after the invasion 41% think Iraqis are better off than they would have been under Hussein, and just over a fifth (21%) believe the Iraqis would have been better off under the dictator. However, more than seven in 10 (71%) say Iraq is likely to be a permanently unstable country over the next few years.

　　In 2010, as the Chilcot inquiry was under way, hearing highly critical evidence about how Britain went to war, 37% thought Blair should be tried for war crimes, according to a ComRes poll at the time.

　　At the time of the invasion, 53% of those polled said they believed military action against Iraq was right.